How to Use DD-WRT for Limiting Bandwidth


DD-WRT is third-party firmware that replaces the default firmware for most wireless routers. DD-WRT contains a number of special features, including those used to control connection bandwidth. Enabling the firmware's "Quality of Service" feature allows users to control the amount of bandwidth used by computer users and the programs they often run. The QoS feature can also prioritize different forms of Internet traffic, allowing for an even and fair distribution of bandwidth for all users.

  • Log in to the DD-WRT user interface. Enter your username and password assigned to your router, when prompted.

  • Click the "NAT/QoS" tab and select the "QoS" tab. Set the "Quality of Service" status to "Enable."

  • Select "WAN" or "LAN & WLAN" from the drop-down menu. Enter your maximum upload and download speeds (in "kbps") in the "Uplink" and "Downlink" boxes. Remember to set the maximum of both values to approximately 80 percent to 95 percent of your actual connection values. Click "Save" when finished.

  • Prioritize the use of bandwidth by application. Locate the "Services Priority" section and click on "Add/Edit Service." Enter the name of the desired program and the ports used for the program. Select the desired priority setting from the drop-down list and click "Add."

  • Prioritize the use of bandwidth by IP or MAC address. Enter the IP or MAC address in their respective sections. Select the desired priority setting from the drop-down list and click "Add."

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  • Photo Credit Thomas Northcut/Photodisc/Getty Images
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